fix(runtime): restore interaction completion ownership

Preserve prepublication local motion completion, require the PartArray enter-world lifecycle port, and balance deferred Use busy ownership across dispatch and cancellation. Reconcile the completed GameWindow connected gates and add regression coverage.

Co-authored-by: Codex <codex@openai.com>

src/AcDream.App/Composition/InteractionRetainedUiComposition.cs

@@ -287,7 +287,7 @@ internal sealed class RetailInteractionRetainedUiCompositionFactory
         return new ItemInteractionController(
             d.Objects,
             playerGuid: () => d.PlayerIdentity.ServerGuid,
-            sendUse: selection.SendUse,
+            sendUse: null,
             sendExamine: guid => session.CurrentSession?.SendAppraise(guid),
             sendUseWithTarget: (source, target) =>
                 session.CurrentSession?.SendUseWithTarget(source, target),
@@ -332,7 +332,8 @@ internal sealed class RetailInteractionRetainedUiCompositionFactory
             requestExternalContainer: guid =>
             {
                 d.ExternalContainers.RequestOpen(guid);
-            });
+            },
+            requestUse: selection.RequestUse);
     }
 
     public RetainedUiComposition CreateRetainedUi(

src/AcDream.App/Composition/InteractionUiRuntimeSources.cs

@@ -169,6 +169,18 @@ internal sealed class DeferredSelectionUiAuthority
         target?.SendUse(guid);
     }
 
+    public void RequestUse(uint guid, ItemUseRequestReservation reservation)
+    {
+        ArgumentNullException.ThrowIfNull(reservation);
+        SelectionInteractionController? target;
+        lock (_gate)
+            target = !_deactivated ? _interactions : null;
+        if (target is null)
+            reservation.CancelBeforeDispatch();
+        else
+            target.RequestUse(guid, reservation);
+    }
+
     public void SendPickup(uint itemGuid, uint destinationContainerId, int placement)
     {
         SelectionInteractionController? target;

src/AcDream.App/Composition/LivePresentationComposition.cs

@@ -460,10 +460,11 @@ internal sealed class LivePresentationCompositionPhase
                     liveEntities,
                     d.PhysicsEngine.ShadowObjects,
                     entityEffects.PlayTypedFromHiddenTransition,
+                    new LiveEntityPartArrayEnterWorldPort(
+                        partArrayLifecycle.HandleEnterWorld),
                     equippedLease.Resource.SetDirectChildrenNoDraw,
                     d.MotionBindings.ClearTargetForHiddenEntity,
-                    d.WorldOrigin.GetCenter,
-                    partArrayLifecycle.HandleEnterWorld),
+                    d.WorldOrigin.GetCenter),
                 static value => value.Dispose());
             var remoteShadowPlacement = new RemoteShadowPlacementSynchronizer(
                 d.RemotePhysicsUpdater,